NOTES
As the marble experiment indicated, there are two kinds of answers to the question "Why?" There are those answers that involve basic law - like the answer to the question of why ice floats, or why the final percentage of black marbles in the first thought experiment is 50%. Those are the kind of answers we like and expect, but they are not the only kinds of answers. The other kind are the answers that involve historical, contingent details. Law still exists but does not determine the answer. Sometimes it's not clear into which category a certain question goes...